Hi Wayne,
OK, let's see if I can shed some more light on this for you.
Yes, in the last image, you are looking at the front of the tank. The uniflow uses the outboard bottom hole because the line must not interfere with the pickup clunk line. The uniflow is bent to make it come very close to the outside edge of the tank, at about mid way down the tank interior. The uniflow line is also bent on the outside to allow you to more easily rotate the uniflow to adjust the virtual tank height. It also will give you a referrence to how far you've rotated the uniflow.
The pickup tube occupies the inside bottom hole, and is slightly bent to angle the pickup to the outside rear of the tank. Rotating this line will not make a diferrence on the apparent tank height.
The overflow line, makes a bend to the upper inside edge of the tank. The illustration shows the best of all worlds regarding the position of the over flow inside the tank, but in practise, it can be further back , but, must be to the upper inside edge to work best. Always cap the overflow whether you're running pressure or not.
The top view, shows the tank as if you were standing at the front of the model, looking down on it.
Hope this helps.
Best wishes,
John Miller